Mechanism for cutting tubes.



Q \i V v L. c; MALTBY.

MECHANISM FOR CUTTING TUBES.

APPLICATION FILED FEB. 21. 1916.

1 01,842 Patented Oct. 17, 1916.

2 SHEETS-SHEET I- k -3 abbom may {144/0041 boz L. C. MALTBY.

MECHANISM FOR CUTTING TUBES.

. APPLICATION FILED FEB. 21. l9l6.

, 1,201,842. Patented Oct. 17,1916.

2 SHEETS-SHEET 2.

LEWIS C. MALTBY, OF WASHINGTON, DI STRICT OF COLUMBIA, ASSIGNOR TO THE STONE STRAW COMPANY, OF WASHINGTON, DISTRICT OF COLUMBIA, A CORPORATION OF NEW JERSEY.

MECHANICM FOR CUTTING TUBES.

Specification of Letters Patent.

Patented Oct. 17, 1916.

Application filed February 21, 1916. Serial No. 79,755.

To all whom it may concern:

Be it known that I, Lnwrs C. MALTBY, a citizen of the United States, residing at Washington, in the District of Columbia, have invented certain new and useful Improvements in Mechanism for Cutting Tubes, of which the following is a specification.

My invention relates to an improved mechanism for cutting tubes into lengths.

The dominant idea presented by this invention is the provision for causing the cutting disk to revolve and travel in its circular orbit at a high speed, and while so doing to turn on an axis which will insure its withdrawal from the path of the rapidly oncoming tube or straw at a speed co-extensive at least therewith.

This invention, therefore, comprises mainly a disk cutter mounted to turn on three different axes, as well as in other auxiliary features of construction which will be hereinafter described and pointed out.

In the accompanying drawings :-Figures 1 and 2 are vertical sectional views taken at right-angles to each other; Fig. 3 is a horizontal section; Fig. 4c is an enlarged sectional view through the disk or cutter, its gear, the rotary head which supports it, showing its bearing in elevation; and Fig. 5 is an enlarged fragmentary detail of one edge of the rotary head.

A, represents the machine-bed orframe, to which the casing 1 is securely held by the bolts 2. A vertical shaft 3 is rotatablysupported in the sleeve 4: at the base of the casing 1, and to its lower end a spiral gear 5 is secured by the nut or equivalent means 5; and a smaller spiral-gear 6 secured on the drive-shaft 7 transmits motion to the spiral gear 5, and through it to the vertical shaft 3, as shown in Figs. 1 and 2.

-A housing 8 is secured tothe upperend of the vertical shaft 3, by means of a pin 9, and a horizontal shaft 10 is journaled in bearings 11 extendingtransversely-of the housing. A bevel-gear 12 is secured on one end of this horizontal shaft 10, and its teeth mesh with the teeth of an annular crown gear 13 secured and depending from the cover 14, which is hinged at 15 to the casing 1, as shown in Fig. 1. By this means the shaft 10 is rotated as the casing 8 isturned on its vertical axis. A circular head 16 is head 16 has a countersunk inner face 20,

which receives the hub 21 of the axle 22 bolted to the head by the nut 23 secured on the threaded end 24 of the. axle. Mounted on this axle with interposed ball-bearings 25, is a gear 26, and upon the hub of this gear the d1sk or cutter 18 is securely held by the nut 27 screwed on the threads 28 of the hub, as

clearly illustrated in Fig. 4. The teeth of the disk or cutter-gear 26 mesh with the teeth of the large stationary gear 29, which 1s mounted concentric with the shaft 10, and

angle-plate or other means 30 bolted to the geariig and the gear 29, as at 31, see Figs.

Clearance slots 32 and 33 are provided on.

opposite sides of the housing 8. for the disk or cutter 18 as it passes these points, while the top portion 34: of the housing forms a safety-guard, although it is understood that since the crown teeth 13 are carried by the cover 14, that on lifting the latter the power which drives the shaft 10 is removed, although the vertical shaft 3 will continue to spin until the drive-shaft 7 stops.

The straw-guides 35 and 36 are located in position to receive the formed tube or straw S, which is fed rapidly therethrough, and which is' severed into predetermined lengths by the disk-cutter 18, which not only is revolving at a high speed, but which likewise is swinging around on its vertical axis 3 at a speed of six to one, or in other words the rotary disk cutter 18 is traveling around the stationary wheel 29 just six times to 'one complete revolution of the housing '8.

secured to one of the bearings 11 by the i faster than the straw feeds forward, thus giving a quick forward brush to the sevcommon plane, and a rotary support for,

said means, the axis of rotation of which lies parallel to the plane'of rotation and travel of the disk-cutter.

2. The combination of two shafts, one carried by the other at an angle thereto, a

disk-cutter revoluble about its axis and rotatable aboutthe axis of the carried shaft, both movements being in a plane parallel with the longitudinal axis of the other shaft, and means for rotating said shafts.

3. The combination of two rotatable shafts, one carried by the other at a right angle thereto, a disk-cutter mounted for rotation with and about the axis of the carried shaft and about its own axis, said rotations being in a plane parallel with the longitudinal axis of the other shaft, and means for rotating both of said shafts.

4. The combination of two rotatable shafts, one carried by the other. at an angle thereto, a disk-cutter mounted for rotation with and about the axis of the carried shaft and about its own axis, said rotations being in a' single plane, bothof said shafts. I I

5. In a cutting machine the combination of a rotatable shaft, a pivotal support therefor, a rotary disk-cutter mounted on said shaft for rotationtherewith, the axis of rotation of said cutter lying parallel to the longitudinal axis of said shaft, and means for rotating said shaft and turning the same about its pivotal support.

6. The "combination of a rotatable shaft, a head carried thereby, a disk cutter rotatably connected with the head, means for turning the shaft bodily with its support, means for causing an axial rotation of the shaft while it is being turnedbodily, and

means for rotating thedisk cutter on its own axis as a result of its rotation about the axis of the shaft.

7 The combination of a rotatable shaft,

'a second shaftcarried by the first-named shaft, a head secured to the latter-named shaft, a disk-cutter rotatably connected with the head, and means concentric with the last-named shaft for revolving the diskcutter as the shaft is turned 8. The combination of a rotatable shaft, a second shaft carried by the first-named shaft, a head secured to the latter-named shaft, a disk cutter; rotatably connected with the head, means concentric with the lastnamed shaft for revolving the disk cutter as the shaftis turned, and means which rogear on the shaft, and

and means for rotating supported by the casing,

bearings' head for rotating the disk cutter,-and means for causing the shaft which carries the head to revolve as it is carried around by the firstnamed shaftas it is turned.

1 0. The combination with a casing, of a shaft rotatably supported therein, a housing carried by said shaft, said housing having oppositely-located bearings, a shaft journaled in said bearings and having a gear secured thereto, a crown-gear carried by the casing, the teeth of which mesh with the consequently the shaft, a head carried by the last-named shaft, a disk cutter rotatably supported on the head and having a gear and a stationary gear secured thereto, the teeth of which intermesh and are traversed by the gear on the disk cutter, whereby, With the rotation of the shaft which carries the housing, the shaft journaled in the latter is rotated and revolved, and the-disk cutter is rotated on two different axes and around a third axis, namely the shaft which carries the head.

11. The combination with a casing having a cylindrical sleeve, of a shaft journaled in saidsleeve, aslotted housing carried by the said shaft, said housing having inwardlyprojecting radial bearings, a gear-wheel secured to and concentric with one of said bearings, a shaft journaled in the bearings and having a gear-wheel secured thereto, a gear the teeth of which engage the gear on said shaft for rotating the latter, a head carried by the shaft which has the gear, .a disk cutter rotatably supported by the head, and having a gear secured thereto the teeth of which engage the teeth of the stationary gear concentric with the 12. The combination of journaled therein, shaft, a cover connected with the casing and carrying a crown-gear, a shaft rotatably supported by the housing and having a gear secured thereto the teeth nof which engage the crown-gear, whereby the shaft is rotated, a head secured to said shaft, a disk cutter revolubly supported thereby and having a gear secured to it, and a stationary gear a casing, a shaft around which the gear on the disk cutter travels and by which the latter is rotated.

13. fhe combination of a shaft having a head secured thereto, said head notched and countersunk, an axle having a hub which fits a housing carried by the the countersink, means for securing said axle to the head, a gear on the axle, ball bearings and a disk-cutter removably secured to the hub of the gear.

14. The combination With a casing having straw-guides, through which the tube or straw is fed, of two rotary shafts at an angle to each other, one supported by the other, means for rotating both of said shafts, a retary disk cutter carried by one shaft and caused to travel in an orbit thereby, and

means for revolving said disk cutter and pe- In testimony whereof I aflix my signature.

LEWIS G. MALTBY. 

